Vertical machine tool high-speed spindle system with excellent thermal stability

Abstract

The invention discloses a vertical machine tool high-speed spindle system with excellent thermal stability. The vertical machine tool high-speed spindle system is characterized in that a shaft sleeve is fixed on a box body, a vertical spindle is fixed with a bearing, and a pull rod is sleeved in the vertical spindle; a transmission gear shaft is vertical, tooth grooves are formed between adjacent gear teeth, and a boss is arranged in the middle of the upper end of a gear body and is internally provided with a center hole; an oil storage tank is arranged at the outer side of the boss, and a plurality of oil guide channels communicated with the tooth grooves are arranged on the side wall close to the gear teeth. A reverse buckling disc of a main shaft buffering connecting structure is fixed to the vertical main shaft, a floating connecting ring sleeves the vertical main shaft between the end face of a box body and the inner side face of the reverse buckling disc, and an axial gap is formed between the outer side face of the floating connecting ring and the inner side face of the reverse buckling disc. A floating guide rod penetrates through a through hole I of the floating connecting ring and is fixed with the box body, a compression spring sleeves the floating guide rod between the outer side surface of the floating connecting ring and a nail head of the floating guide rod, and the lower end of a floating end cover is fixed with the floating connecting ring and is also fixedly connected with the cylinder body of a notching cylinder. The vertical machine tool high-speed spindle system has the characteristics that the structure is simple, the thermal stability is excellent, the vibration is small, the service life of the bearing is long, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of machine tool spindles, in particular to a high-speed spindle system of a vertical machine tool with simple structure, small vibration, long bearing life, high reliability and excellent thermal stability. Background technique [0002] Modern manufacturing is developing in the direction of high speed and high precision, and the requirements of manufacturing technology for the machining accuracy and reliability of machine tools are also increasing. Studies have shown that thermal deformation errors account for the largest proportion of errors generated by machine tools during precision machining, and the proportion of thermal errors increases with the improvement of machine tool precision. Therefore, it is an important subject to improve the precision of the machine tool to control the thermal error accurately. [0003] At present, there are three main measures to improve the thermal error of the machine to...

AI Technical Summary

Problems solved by technology

Although the above-mentioned technical measures have good heat suppression and heat equalization effects, they are all passive measures, which do not solve the problem of heat generation and uneven temperature from the root cause, and the complex structure leads to insufficient reliability.

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